rusted screws

[lee8040]

my brake fluid reservoir cap screws are rusted and wont undo, there starting to round off whats the best way to get them out as i think i only have 1 or 2 more goes before there completly rounded off ?

ta

[ms51ves3]

You have loads of options.

Find a proper fitting screw driver.
Use a punch to try and knock the screws around.
Dremel a slot into the screws and use a flat head screw driver to remove them.
Drill the head off the screws, remove the lid and then unscrew the stub with some pliers.

[lee8040]

should i wd40 it first to loosen it or not?

[truslack]

Use some proper penetrating oil, not WD40.
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Current: Suzuki RG 125 Gamma, Honda H100, Triumph Tiger 800XC, Suzuki SV650 (minitwin)

[element]

first off dont use screwdrivers... waste of time.. get one of those little screwdriver bits you get for drills. find one that fits in perfect and give it a tap with a hammer into the bolt head.. it should fit in nice and snug. .. Then use a 6.5mm socket and a ratchet to turn the screwdriver bit while putting pressure down on the head.. You prob wont even need penetrating oil.. Ive done this loads and works every time..
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[ZRX61]

Impact driver. sorted.

[Phoenix]

Brake reservoir screws do get rusted and seized a bit but they're never that bad in my experience nor are they made from a particularly soft metal, thefore it sounds like you've used the wrong screwdriver size and haven't been applying enough pressure. Give them a sharp tap before holding the reservoir in one hand and really pushing down while trying to crack the screws free using a driver that fits snug.

[puremagic72]

I did the last one ms51ves3 stated just the other week.

The only way i could get it out.

Baz.
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Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[stirlinggaz]

Hi,
there always one of the 2 screws/bolts that wont come out, lol
usually because someone has used the wrong screwdriver & rounded the head off.
hammer & punch will do it but last few i have used the dremel with the little pink pointed grinding stone attachment.
ground the head of the bolt completely off, then lifted the mc cover off.
the remaining stub can be removed with vice grips. or if its really stubburn, dremel AGAIN.
this time with cutting disc, cut a slot into the stub.
then use a flat bladed screwdriver or impact driver.
then replace with DECENT screws/bolts. (with a dab of copper grease on the threads to stop them seizing again)
cheers,
GAZ

[stinkwheel]

The trouble with those screws is that they are a water trap.

Rain water pools in the head of the screw and rots it. The ideal solution would be to fit socket head screws with those little domed plastic cover caps pressed into the heads.

I usually fill the head of the screw with a dab of grease after fitting them. A blob of silicone would achieve the same thing. Just pick it out before you want to remove it next time.
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I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[seantobin43]

get the screwdriver and a hammer and hit the screwdriver with the hammer and try to turn the screw and also use a lot of WD40 or any other oil
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SEAN TOBIN

[_sketch_]

Had that exact problem!!! Smack it with an impact driver! worked first time! everhting else ate away at the head!
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[Mudskipper]

I bought some cheapo (like 2 quid for a set) torx head bits for a screwdriver (like an allen key, but star shaped rather than hex) and hammered one in snugly. It 'bites' into the mashed up mess and comes out a treat.

Whatever you do, please make sure you replace the bolts with copperslipped new ones once you get them out!
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"You're clumsy, you eat too much and you behave like a 12 year old boy. But you know what? Every once in a while, you find a thumb."

[Creepin Moses]

WD40 may help, but you could try boiling a kettle and pour the boiling water over the resovoir, then get an impact driver (with the right sized bit and give it some short sharp digs with a peace maker (hammer), this should start to loosen them up a bit. If that doesn't work last resort buzz the heads off with a dremmel tool or something, lift your lid off to let you grip the remainder with a pair of vice grips or mole grips. But keep plying with WD40 from time to time.

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